Australian jet fighters have led international air strikes against Islamic State targets for the first time, destroying key training facilities used by the extremists in Iraq.

Defence has also revealed that 200 special forces personnel could enter the country as military advisers within the next week.

RAAF aircraft have flown 144 missions since joining the fight against IS, which is also known as ISIL.

Super Hornets accounted for 89 of the sorties, with laser- and GPS-guided bombs dropped in October.

Chief of Joint Operations Vice Admiral David Johnston said IS targets were being hit hard, and 14 were either destroyed or damaged by the Australian strikes.

A convoy of vehicles and fighters from the Islamic State group travel through Iraq's Anbar Province. (AP) (AP)

"The air campaign continues to deny ISIL the ability to have freedom of movement and to be able to amass their forces and be able to conduct resupply of their fighters in the field," he told reporters in Canberra.

For the first time, the Super Hornets led a strike mission targeting IS training facilities in northern Iraq.